1	"Plants regularly pinnate, often bi- or tri-pinnate; leaf margin decurrent"	2
1	"Plants irregularly, often sparingly branched; leaf decurrency short and often inconspicuous"	4
2	"Leaves of stems only gradually larger than those of branches, not squarrose; leafy stems mostly prostrate"	"Eurhynchium striatum"
2	"Leaves of stems radically and abruptly larger, broader and more decurrent than those of branches; leafy stems usually arching above the sustrate"	3
3	"Plant regularly plumose with a single main stem from which arises shorter, nearly unbranched, lateral stems; plant mainly of coastal moderately low elevation sites"	"Kindbergia oregana"
3	"Plant irregularly branched or tri- to tetra-pinnate; plant mainly of higher elevation, or of deeply shaded sites"	"Kindbergia praelonga"
4	"Plant complanate-foliate; leaves with a well-demarcated and laterally twisted acumen and with the cells in that acumen mostly more than 4:1"	"Steerecleus serrulatus"
4	"Plants not complanate; leaves not acuminate or with the acumen poorly defined; cells in acumen various but often very short"	5
5	"Leaves orbicular; leaf apices not at all acuminate, plant aquatic"	"Platyhypnidium riparioides"
5	"Leaves longer than broad; leaf apices blunt to obtuse; plant on mesic to rather dry sites"	6
6	"Leaves deeply concave with basal cells rectangular across the entire base"	"Scleropodium colpophyllum"
6	"Leaves not deeply concave; differentiated cells of leaf base confined to alar region"	7
7	"Leaves ovate-lanceolate with a short but blunt acumen; seta smooth"	"Eurhynchium pulchellum"
7	"Leaves elliptic to elliptic lanceolate with a broadly acute to almost obtuse apex; seta papillose throughout"	"Eurhynchium hians"